EUGENE, Ore. (AP) - Incoming Florida State freshman Kendal Williams won the 100 meters at the IAAF world junior championships at Oregon’s Hayward Field on Wednesday night, besting fellow American Trayvon Bromell.

Williams finished in a personal-best 10.21 seconds, and Bromell followed at 10.28. Williams’ gold was the first for the United States at the international track and field event.

“It was the best race I’ve ever had in my life,” Williams told reporters afterward.

Bromell, a freshman at Baylor, set the junior world record in the 100 at the NCAA track and field championships last month, breaking the 10-second barrier with a 9.97 finish.

Dina Asher-Smith of Britain won the women’s 100 in 11.23 seconds. Florida high school junior Kaylin Whitney was third in 11.45. Earlier this month at the U.S. junior championships, Whitney set a high school record of 11.10.

“I’m over the moon,” Asher-Smith said. “This is one of those things that I’ve always wanted. Everyone who is great seems to have been a junior champion, so being one now is unreal.”

In other final events, Anezka Drahotova of the Czech Republic won the 10,000 race walk in a world junior-record 42:47.25. Countryman Jiri Sykora won the decathlon with 8,135 points, a record for the junior worlds.

Britain’s Morgan Lake won the youth heptathlon with 6,148 points. The 17-year-old athlete was the youngest in the field.

Ethiopia’s Alemitu Heroye won the women’s 5,000 in 15:10.08.

It is the first time the junior world meet has been held in the United States. Nearly 1,600 athletes from 170 countries are taking part in the event that runs through Sunday. Most finals are set for this weekend.

Sanctioned by the sport’s international governing body, the junior worlds include athletes born between 1995 and 1998.